A193 B7, A194 2H, A320 L7, L7M Alloy Steel Fasteners, ASME B18.2.1 Hex Bolts ASME B18.2.2 Hex Nuts ASME B18.22.1, Stud Bolt, Hex Bolt, Hex Bolt mei dielthread, Hex Bolt mei folsleine thread, U, ThBolt Screw, Hex Nut, Flat Washer, Spring Washer.
- Zhengzhou Huitong Pipeline Equipment Co., Ltd.